ALTON — Police announce they have arrested three individuals suspected in the assault and robbery of a woman making an evening deposit at a local bank 12 days ago.

Justin Louis Lavalley, 25, of Rochester, was arrested and charged with robbery, second-degree assault, and conspiracy to commit robbery. Brett Stranger, 21, of Alton was arrested and charged with criminal liability for conduct of another.

Alton police report Scott Prior, 25, of Alton, the third suspect wanted in this case, was arrested by police in Manchester. Prior is now in custody and will be held at the Manchester Police Department station until Alton officers arrive to transport him back to Alton.

On Nov. 28, Katrina Williams, a store clerk at the Alton Village Store, reported she had been robbed while making a deposit at the TD Bank on Main Street. Two male subjects approached her from behind as she walked toward the night deposit drop and grabbed the bag from her hands. A physical struggle ensued between Williams and one of the suspects resulting in Williams being taken to the ground and rendered unconscious.

Lavalley is currently being held on $30,000 cash bail with a probable cause hearing set for Dec. 17 out of Laconia District Court. Stranger is currently out on personal recognizance bail with an arraignment date of Jan. 17, 2013 out of Laconia District Court.

Chief Ryan Heath wrote in an email, Prior will be held on cash bail with an arraignment for Tuesday morning out of Laconia District Court. He will be charged with theft, a Class A felony, and operating after suspension, a second offense for prior and a Class A misdemeanor.

The investigation into the case is ongoing at this time. According to a department press release, information indicates there are two additional suspects who aided in the planning of the crime. Those with information as to the location of Prior or additional information regarding this case are urged to call Alton police at (603)875-3752.